5 pin wire maze connection
First of all thank you for letting me in! i have already mounted the kit and i have troble finding where to connect the black wire at the moment it is not connected and seems to work ok 
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Indeed!
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On Thu, Jun 1, 2017 at 03:51 pm, Bill Meara wrote:
10 turns on that core is about 34uH.???? On a T-50-2 iron powder core, 10 turns yields only about one half microfarad: .49 uF.? That is a big difference.
?
?
|
For the transformers in the BITX40Module, Farhan uses FT-37-43 cores.?? That is type 43 ferrite material.?? He has ten turns trifilar on those cores.? 10 turns on that core is about 34uH.???? On a T-50-2 iron powder core, 10 turns yields only about one half microfarad: .49 uF.? That is a big difference.
Huseyin:? Should I try to send you some cores in the mail?? Will they make it through customs????
73? Bill
On Thursday, June 1, 2017 8:14 AM, huseyin.guner via Groups.Io <huseyin.guner@...> wrote:
|
Huseyin:
What you are looking for are FT-37-43 and FT-50-43 cores.
These are not powdered metal cores; they are ferrite cores.
The red, yellow, and white cores are powdered iron; they work
ok in BPF filters and such, but are not recommended for broad-band
amplifiers.
I don't know offhand of a good source for you but you can
use FT-37-61 and FT-50-61 binocular cores. They are
found in the old 300/75 ohm splitter units used in TV antenna
lines to feed the 75 ohm input to the TV.
There are ferrite cores in computer power supplies also, but these
are usually of the wrong material and will not work well...but they
may work (usually they don't above 160m).
Consult on-line sources for winding data, such as that of W8DIZ.
The type 61 cores will take a few more turns than the 37 type cores
for the same inductance. They have the advantage of not saturating at
lower frequencies. I presume you can find some European sources for the type 37 cores;
that should work.
Hope this helps.
john
AD5YE
|
Re: Raduino_v1.13 with scan function released
Hi Allard:
I really all the features of version 1.13, however I can not get the scan work, I have typed in all the parameters. When I go back to normal and try to start the scan mode nothing happens, must be doing something wrong, all the other functions work correctly
Thanks and 73 Ross K7RSB
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Re: Change from TX offset to RX offset in future code versions?
IMO there's no one "right" way. Either way is correct.
I own several older rigs and they use different methods.
For example Yaesu FT-901 has RX offset, Kenwood TS-830 has TX offset.
But in all cases the frequency as shown on the display during TX is the
true carrier frequency being transmitted.
The reason why the sketch currently uses TX offset rather than RX offset
is just for simplicity reasons.
During RX the raduino doesn't "know" whether we are listening to a SSB or
a CW signal. Only during TX the raduino can differentiate between SSB and
CW.
Because when the mike's ptt switch is pressed, it knows it's SSB and no
offset is needed. When the morse key is down it knows it's CW so it knows
it has to add the extra offset.
In the current setup the user can only toggle between LSB/USB. When the
key is down this automatically becomes CWL/CWU.
For RX offset we would need an extra mode switch so that the operator can
select LSB, USB, CWL, CWU, which would tell the raduino whether or not to
apply the RX offset.
Perhaps we can find a different clever way for mode selection that doesn't
involve extra switches. If we have some bytes left we may be able to do it
from the software. But that may become a challenge.
73 Allard PE1NWL
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On Thu, June 1, 2017 18:55, Jerry Gaffke via Groups.Io wrote: I tend to agree with Bob. ??
But Allard is doing a great job in getting that firmware sorted out, and
I'm looking forward to seeing the end result of his process.
I've been kibitzing now and then as well, when Allard's code has settled
out I may jump in and make some of my favorite adjustments.
If I can find the time.
Using a Nano with an open source sketch makes it possible for most anybody
to take a whack and make it right.
However you happen to define right.
Do try to somehow show where your hacks are.
For example, avoid adjusting comments and variable names and formatting in
code that you are not otherwise changing
so it is easy to run a unix diff on the two files. ??Better yet, use lots
of #ifdef's and comments to make it obvious to the casual reader.
Jerry, KE7ER
On Thu, Jun 1, 2017 at 08:53 am, Bob wrote:
There may well be reasons that you prefer TX Offset which I don't
appreciate (like memory size), but it really should be a RX offset.
|
Re: Conflicting information
I once asked Peter Parker directly through Youtube about that, where he said "power supply noise filter circuits may be your best friend here."
I found that if you power the PA separately, you can tap into that supply and reduce it to power a fan without inducing noise into the circuit. It's the switching PWM circuitry in the brushless fans that put switching noise into the audio circuitry. But when powered separately with the PA there is no noise at all, except for the sound of the fan itself running. And no noise in your transmitted signal either.?
I bet Jerry the Electrical Engineer could explain the how's and why's of fan noise in audio circuitry if you need it.
By the way, using a switching buck converter will also induce switching noise if it is connected to the main DC input. But the buck converters are fine with the PA. I use 1 to step down 32V to 24V for the final PA, and another 1 to step down that 24V to about 8V for slowly and quietly running my fan. And power the main board with a switching 12V adapter. And so far switching power bricks don't cause noise in the BITX40, but they sure do in my simpler CW kits. They need batteries, or analog regulators.
If you are going to use a fan, you have to have two power inputs. And it's the easiest way.
|
Re: question about dan's small parts and kits...
I'm pretty sure I made a check out to Dan's Small Parts. I don't think he has an email address. I had to use snail mail for everything and never did get a response by phone. That said, I wouldn't hesitate to do business with him again. I ordered a bunch of toroids "packs", and he duplicated one of the lower priced packs. I had to write him and asked how he wanted to handle the return. A few days later I got the right pack and a $1 for the postage on my letter. He told me to keep the dup pack since he messed the order up. Amazing.
Jack, W8TEE
From: Bill K7WXW <k7wxw@...>
To: [email protected]
Sent: Thursday, June 1, 2017 2:45 PM
Subject: [BITX20] question about dan's small parts and kits...
GM - I am putting together an order to send to Dan's Small Parts in Montana. Per Dan's instructions, I am sending a USPS money order. Does anyone here know to whom the money order should be made out? I haven't been able to raise anyone on the phone and there doesn't seem to be an email address available either.
?
73 de bill K7WXW
|
Re: Conflicting information
I agree with your analysis, however by turning off the 12 volt supply I never have to be concerned with a faulty diode or any other problem. The 12 volt supply is not needed and it is a minor effort to turn it off. I also put fuses in the negative lead of my mobile rigs and have not blown one in over 60 years of hamming, but one day¡ ? v/r Fred W4JLE ?
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From: [email protected] [mailto:[email protected]] On Behalf Of davemrtn
Sent: Thursday, June 1, 2017 08:33
To: [email protected]
Subject: Re: [BITX20] Conflicting information? Actually, I don't think it will have any effect on the computer usb port. The reason it would not harm the usb port is defined in the Arduino Nano schematic... Look at the schematic -? The Nano has this magic little 'check valve' called a diode. David Martin - - Mountain Home, Ar. -----------------------------------------
Everybody complains about CO2, but nobody complains about all
the trees cut down to build Highways and Cities.
Recycle, Reuse, Re-purpose, Repair On 6/1/2017 01:07, Dr Fred Hambrecht wrote: It should not be done.? Putting two sources in parallel that may be at a different potential is never a good idea. While it may ?or may not hurt the BITX, it could play hell with the computer USB port. ? v/r Fred W4JLE ? From: [email protected] [mailto:[email protected]] On Behalf Of John P
Sent: Wednesday, May 31, 2017 17:54
To: [email protected]
Subject: Re: [BITX20] Conflicting information ? Thanks! Powering something from 2 sources simultaneously scares me as I already
blew up an expensive gimmick that way!
?
|
Re: Conflicting information
Jack and ....,
I tried adding a fan very similar to the one pictured and it introduced a "whirring" noise into the audio that I could not get rid of. It was wired up to the main supply voltage via the main on/off switch. I did not try putting a regulator in front but did try various caps/filters/etc to no avail.
YMMV
P. J. Hicks, N7PXY
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Re: question about dan's small parts and kits...
Last time I ordered from them I made the money order out to ¡°Dan¡¯s Small Parts and Kits¡± Mike K5ESS ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Bill K7WXW
Sent: Thursday, June 01, 2017 1:45 PM
To: [email protected]
Subject: [BITX20] question about dan's small parts and kits... ? GM - I am putting together an order to send to Dan's Small Parts in Montana. Per Dan's instructions, I am sending a USPS money order. Does anyone here know to whom the money order should be made out? I haven't been able to raise anyone on the phone and there doesn't seem to be an email address available either. ? 73 de bill K7WXW
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Re: Handheld Mic w/ PTT for BITX40
Almost the same here, loads of spare connectors from previous projects, and a spare microphone. Result... no outlay for new bits.
More to spend on strip board and knobs etc.
Phil - G7BZD
On Thu, Jun 1, 2017 at 8:58 PM, Ryan Flowers <geocrasher@...> wrote: I really should have updated this thread. I have gone a different direction with the mic. I built one from scratch, and it's worked out nicely. I used 8 pin mic connectors because I got 5 of them for $6 on Amazon. I've detailed my homebrewed solution here:
--
Ryan Flowers W7RLF
?
?<-- Learn how to go digital on the BITX40
|
Re: Handheld Mic w/ PTT for BITX40
I really should have updated this thread. I have gone a different direction with the mic. I built one from scratch, and it's worked out nicely. I used 8 pin mic connectors because I got 5 of them for $6 on Amazon. I've detailed my homebrewed solution here: http://miscdotgeek.com/bitx40-simple-microphone-made-scraps/ -- Ryan Flowers W7RLF
?
?<-- Learn how to go digital on the BITX40
|
Re: question about dan's small parts and kits...
You make it out to Dan's Small Parts and Kits. Have ordered from him numerous times. Also see??his online ebay store.
|
question about dan's small parts and kits...
GM - I am putting together an order to send to Dan's Small Parts in Montana. Per Dan's instructions, I am sending a USPS money order. Does anyone here know to whom the money order should be made out? I haven't been able to raise anyone on the phone and there doesn't seem to be an email address available either.
?
73 de bill K7WXW
|
Re: Conflicting information
I have a 60mm PC fan in my holiday tin enclosure without vents. I use the separate PA power input with a step down buck converter to power the fan without the noise you get when tapping into the main DC power. The thin metal box acts like a heat sink while the fan blows half on the final PA, and half circulating around the enclosure. It works great now but after I add more wires and fill more space with my digital upgrade, It's gonna need cross flow with two vents.
I really like your towel tip. It's 1 week after Towel Day too. Google it.
Many times I have grabbed the flashlight and crawled under the table to look for that tiny screw that just bounced or rolled off into oblivion. How did it get over there?
|
Re: Change from TX offset to RX offset in future code versions?
Do try to somehow show where your hacks are.
For example, avoid adjusting comments and variable names and formatting in
code that you are not otherwise changing
so it is easy to run a unix diff on the two files. ??Better yet, use lots
of #ifdef's and comments to make it obvious to the casual reader.
Jerry, KE7ER Reformatting makes it easier to read. diff -b ignore changes in white space. But I don't plan on messing with the Raduino code. I'm in the process of writing one myself. Vince - KA8CSH -- Michigan VHF Corp.
|
Re: W8TEE TFT/VFO Board from FDIM talk
Frustrating.
I did find several listings on eBay if that is suitable. All located in
China however so subject to several weeks wait for shipping
All about $15 to $19 USD
I am surprised that there are not more listings.
cheers, Graham ve3gtc
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On 6/1/2017, "Bruce Harvey" <bharvey@...> wrote: <html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<div class="moz-cite-prefix">Hi again,<br>
<br>
I checked with the seller of the board.?? The listing said will not
ship to Canada.?? However he did say he would send one by FEDEX for
$20 USD or DHL for a bit over $25.?? I've been stung by brokerage
fees on this end in the past so I'm not anxious to go that route
again.?? Anyway, that is way above what you folks in the US would
have to pay for shipping.?? Kind of ridiculous.?? :-)<br>
<br>
We haven't found any other boards that are what Jack recommends so
looks like I'll be using a whole bunch of wire jumpers to fit a
larger Mega 2560 into the circuit.<br>
<br>
Bruce, VE1II<br>
<br>
On 2017-05-31 9:15 PM, Jack Purdum via Groups.Io wrote:<br>
</div>
<blockquote type="cite" cite="mid:[email protected]">
<div style="color:#000; background-color:#fff;
font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande,
sans-serif;font-size:16px">
<div><span>This is the same supplier I use. If you buy in
quantity, he will discount. I usually buy 25 at a time for
club builds.</span></div>
<div><span><br>
</span></div>
<div><span>Jack, W8TEE</span></div>
<div class="qtdSeparateBR"
id="yui_3_16_0_ym19_1_1496275491706_22371"><br>
<br>
</div>
<div class="yahoo_quoted"
id="yui_3_16_0_ym19_1_1496275491706_22375" style="display:
block;">
<div style="font-family: Helvetica Neue, Helvetica, Arial,
Lucida Grande, sans-serif; font-size: 16px;"
id="yui_3_16_0_ym19_1_1496275491706_22374">
<div style="font-family: HelveticaNeue, Helvetica Neue,
Helvetica, Arial, Lucida Grande, sans-serif; font-size:
16px;" id="yui_3_16_0_ym19_1_1496275491706_22373">
<div dir="ltr" id="yui_3_16_0_ym19_1_1496275491706_22372">
<font id="yui_3_16_0_ym19_1_1496275491706_22376"
size="2" face="Arial">
<hr size="1"> <b><span style="font-weight:bold;">From:</span></b>
Michael Hagen <a class="moz-txt-link-rfc2396E" href="mailto:motdog@..."><motdog@...></a><br>
<b><span style="font-weight: bold;">To:</span></b>
<a class="moz-txt-link-abbreviated" href="mailto:[email protected]">[email protected]</a> <br>
<b><span style="font-weight: bold;">Sent:</span></b>
Wednesday, May 31, 2017 6:25 PM<br>
<b><span style="font-weight: bold;">Subject:</span></b>
Re: [BITX20] W8TEE TFT/VFO Board from FDIM talk<br>
</font> </div>
<div class="y_msg_container"
id="yui_3_16_0_ym19_1_1496275491706_22377"><br>
<div id="yiv7688088292">
<div id="yui_3_16_0_ym19_1_1496275491706_22379">
<div id="yui_3_16_0_ym19_1_1496275491706_22378">Ships
from US fast.?? I got one. $18 plus $2 shipping.</div>
<div id="yui_3_16_0_ym19_1_1496275491706_22380">Mike,
WA6IAP</div>
<div id="yui_3_16_0_ym19_1_1496275491706_22381"><br
clear="none">
</div>
<div id="yui_3_16_0_ym19_1_1496275491706_22383"><a
rel="nofollow" shape="rect"
class="yiv7688088292moz-txt-link-freetext"
target="_blank"
href="
id="yui_3_16_0_ym19_1_1496275491706_22382"
moz-do-not-send="true"></a><br
clear="none">
</div>
<br clear="none">
<div class="yiv7688088292moz-cite-prefix"
id="yui_3_16_0_ym19_1_1496275491706_22384">On
5/31/2017 3:17 PM, Bruce Harvey wrote:<br
clear="none">
</div>
<blockquote type="cite"> </blockquote>
</div>
<div id="yui_3_16_0_ym19_1_1496275491706_22386">
<div class="yiv7688088292moz-cite-prefix"
id="yui_3_16_0_ym19_1_1496275491706_22385">Thanks
Jack.?? That is what my son said when I showed him
the link.?? :-)<br clear="none">
Back to the search.<br clear="none">
<br clear="none">
Bruce, VE1II<br clear="none">
<br clear="none">
On 2017-05-31 7:09 PM, Jack Purdum via Groups.Io
wrote:<br clear="none">
</div>
<blockquote type="cite"
id="yui_3_16_0_ym19_1_1496275491706_22388">
<div
style="color:#000;background-color:#fff;font-family:Helvetica
Neue, Helvetica, Arial, Lucida Grande,
sans-serif;font-size:16px;"
id="yui_3_16_0_ym19_1_1496275491706_22387">
<div dir="ltr"
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54034"><span
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54184">That is NOT the
right Arduino. That is the Nano Pro Mini,
which should cost less than $2. Essentially,
it's a Nano, but without the convenience of
the USB connector, which makes it a PITA to
program. You need to find a MEGA 2560 Pro
Mini to get the expanded memory and I/O
pins.</span></div>
<div dir="ltr"
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54034"><span><br
clear="none">
</span></div>
<div dir="ltr"
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54034"><span
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54185">Jack, W8TEE</span></div>
<div class="yiv7688088292qtdSeparateBR"
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54033"><br
clear="none">
<br clear="none">
</div>
<div class="yiv7688088292yahoo_quoted"
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54190"
style="display:block;">
<div
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54189"
style="font-family:Helvetica Neue,
Helvetica, Arial, Lucida Grande,
sans-serif;font-size:16px;">
<div
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54188"
style="font-family:HelveticaNeue,
Helvetica Neue, Helvetica, Arial, Lucida
Grande, sans-serif;font-size:16px;">
<div dir="ltr"
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54187">
<font
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54186"
size="2" face="Arial"> </font>
<hr
id="yui_3_16_0_ym19_1_1496275491706_22389"
size="1"> <b><span
style="font-weight:bold;">From:</span></b>
Ken <a rel="nofollow" shape="rect"
class="yiv7688088292moz-txt-link-rfc2396E"
ymailto="mailto:chase8043@..."
target="_blank"
href="mailto:chase8043@..."
id="yui_3_16_0_ym19_1_1496275491706_22390"
moz-do-not-send="true"><chase8043@...></a><br
clear="none">
<b><span style="font-weight:bold;">To:</span></b>
<a rel="nofollow" shape="rect"
class="yiv7688088292moz-txt-link-abbreviated"
ymailto="mailto:[email protected]"
target="_blank"
href="mailto:[email protected]"
id="yui_3_16_0_ym19_1_1496275491706_22391"
moz-do-not-send="true">[email protected]</a>
<br clear="none">
<b><span style="font-weight:bold;">Sent:</span></b>
Wednesday, May 31, 2017 4:48 PM<br
clear="none">
<b><span style="font-weight:bold;">Subject:</span></b>
Re: [BITX20] W8TEE TFT/VFO Board from
FDIM talk<br clear="none">
</div>
<div class="yiv7688088292y_msg_container"
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54194"><br clear="none">
<div id="yiv7688088292">
<div
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54193">
<div dir="ltr"
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54192"><a
rel="nofollow" shape="rect"
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</div>
<div><br clear="none">
</div>
<div
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54195">73
Ken VA3ABN</div>
</div>
<div
class="yiv7688088292gmail_extra"
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54200"><br
clear="none">
<div
class="yiv7688088292gmail_quote"
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54199">On Wed, May 31,
2017 at 4:22 PM, Bruce Harvey <span
dir="ltr"><<a
rel="nofollow" shape="rect"
ymailto="mailto:bharvey@..." target="_blank"
href="mailto:bharvey@..."
moz-do-not-send="true">bharvey@...</a>></span>
wrote:<br clear="none">
<blockquote
class="yiv7688088292gmail_quote"
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54198" style="margin:0
0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex;">
<div
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54197">
<div
class="yiv7688088292m_-8394100834727030921moz-cite-prefix"
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54196">On 2017-05-27
4:57 PM, Jack Purdum via
Groups.Io wrote:<br
clear="none">
</div>
<blockquote
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54201"
type="cite"><span
id="yiv7688088292m_-8394100834727030921yui_3_16_0_ym19_1_1495914123078_5323">KY040
(threaded shaft)
encoders</span></blockquote>
<div
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54202">Hi
guys,</div>
<div
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54203">I've
been trying to locate an
Arduino Mega 2560 Pro Mini
board source that is
available to Canadian
buyers.</div>
<div
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54204">Any
suggestions would be
appreciated.</div>
<div
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54205">Also,
I haven't found a KY040
(threaded shaft) encoder.</div>
<div
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54206">Other
than that I think I have
the other parts located
and ordered.</div>
<div
id="yiv7688088292yui_3_16_0_ym19_1_1496261018696_54207">Bruce,
VE1II<br clear="none">
</div>
<div
id="yiv7688088292m_-8394100834727030921DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br
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Re: Change from TX offset to RX offset in future code versions?
I tend to agree with Bob. ?
But Allard is doing a great job in getting that firmware sorted out, and I'm looking forward to seeing the end result of his process.
I've been kibitzing now and then as well, when Allard's code has settled out I may jump in and make some of my favorite adjustments.
If I can find the time.
Using a Nano with an open source sketch makes it possible for most anybody to take a whack and make it right.
However you happen to define right.
Do try to somehow show where your hacks are.
For example, avoid adjusting comments and variable names and formatting in code that you are not otherwise changing
so it is easy to run a unix diff on the two files. ?Better yet, use lots of #ifdef's and comments to make it obvious to the casual reader.
Jerry, KE7ER
toggle quoted message
Show quoted text
On Thu, Jun 1, 2017 at 08:53 am, Bob wrote:
There may well be reasons that you prefer TX Offset which I don't appreciate (like memory size), but it really should be a RX offset.?
?
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Re: Conflicting information
Yep, I do think that's better. BTW, I think I'm going to add a 25mmx25mm mini fan to the back of the case right behind the PA. (See picture.) My enclosure doesn't have any airflow, so I found these for less than $2 each.?
Jack, W8TEE
P.S. If you're interested, I always assemble stuff on a towel so when I drop a part--and I will--it doesn't bounce somewhere and I can't find it. In the picture, you can see the towel has suffered from "M-fallout", which can happen when you eat a hot dog with mustard while you work...
From: John Smith via Groups.Io <johnlinux77@...>
To: [email protected]
Sent: Thursday, June 1, 2017 12:25 PM
Subject: Re: [BITX20] Conflicting information
I wondered when you were gonna ask me to dance again Jack. You're absolutely right. I should have gotten information about the Arduino Nano used on the Raduino board. So here it is.-
Power
The Arduino Nano can be powered via the Mini-B USB connection, 6-20V unregulated external power supply (pin 30), or 5V regulated external power supply (pin 27). The power source is automatically selected to the highest voltage source.?
Those are three options. And I still recommend turning off or disconnecting your DC power before connecting the Nano Raduino DDS to USB for programming. How's that? It's better right?
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Allard PE1NWL
bill
